XrdPfc::StableChunkPool< T, InnerShift, MaxChunks > Class Template Reference

#include <XrdPfcStableChunkVector.hh>

Inheritance diagram for XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >:

Collaboration diagram for XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >:

Public Member Functions
int	acquire ()
std::size_t	n_free () const
std::size_t	n_in_use () const
void	release (int i)
	Clear the slot and return it for reuse. Caller must hold its mutex.
Public Member Functions inherited from XrdPfc::StableChunkVector< T, 12, 1024 >
	StableChunkVector ()
int	add ()
	Append a default-constructed T; return its index, or -1 if full.
std::size_t	capacity () const
bool	full () const
T &	operator[] (std::size_t i)
std::size_t	size () const

Additional Inherited Members
Static Public Attributes inherited from XrdPfc::StableChunkVector< T, 12, 1024 >
static constexpr std::size_t	s_capacity
static constexpr std::size_t	s_chunk_mask
static constexpr std::size_t	s_chunk_size

Detailed Description

template<typename T, unsigned InnerShift = 12, unsigned MaxChunks = 1024>
class XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >

StableChunkVector with slot recycling. Not thread-safe: acquire() and release() must run under the mutex that also publishes the index. release() clears the slot, so acquire() always returns a cleared one. Requires T::clear().

Definition at line 71 of file XrdPfcStableChunkVector.hh.

Member Function Documentation

acquire()

template<typename T, unsigned InnerShift = 12, unsigned MaxChunks = 1024>

int XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >::acquire ( )

inline

Index of a recycled or freshly appended slot, cleared and ready for use, or -1 if capacity is exhausted. Caller must hold its mutex.

Definition at line 78 of file XrdPfcStableChunkVector.hh.

   {
      if ( ! m_free_slots.empty())
      {
         int i = m_free_slots.back();
         m_free_slots.pop_back();
         return i;
      }
      return Base::add();
   }

References XrdPfc::StableChunkVector< T, InnerShift, MaxChunks >::add().

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n_free()

template<typename T, unsigned InnerShift = 12, unsigned MaxChunks = 1024>

std::size_t XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >::n_free ( ) const

inline

Definition at line 96 of file XrdPfcStableChunkVector.hh.

{ return m_free_slots.size(); }

n_in_use()

template<typename T, unsigned InnerShift = 12, unsigned MaxChunks = 1024>

std::size_t XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >::n_in_use ( ) const

inline

Definition at line 97 of file XrdPfcStableChunkVector.hh.

{ return Base::size() - m_free_slots.size(); }

References XrdPfc::StableChunkVector< T, InnerShift, MaxChunks >::size().

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release()

template<typename T, unsigned InnerShift = 12, unsigned MaxChunks = 1024>

void XrdPfc::StableChunkPool< T, InnerShift, MaxChunks >::release ( int i )

inline

Clear the slot and return it for reuse. Caller must hold its mutex.

Definition at line 90 of file XrdPfcStableChunkVector.hh.

   {
      (*this)[i].clear();
      m_free_slots.push_back(i);
   }

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The documentation for this class was generated from the following file:

• XrdPfcStableChunkVector.hh